SOCIAL SCIENCES
Hand, Carol

Dead Zones: Why Earth's Waters Are Losing Oxygen

(3) YA The oxygen-poor sections of the Gulf of Mexico, Baltic Sea, and other bodies of water threaten marine and coastal animal populations, as well as human livelihoods. Hand explains the main causes--fertilizers and runoff from upstream agribusinesses and lawns; human sewage--and possible engineering and policy solutions. Color photographs and diagrams illustrate the scope of the challenge and its impact. Reading list, websites. Bib., glos., ind.

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